Problem 8.14 Part A Determine its angular acceleration. A 70-cm-diameter wheel a

Question

Problem 8.14 Part A Determine its angular acceleration. A 70-cm-diameter wheel accelerates uniformly about its center from 130 rpm to 390 rpm in 3.2 s Express your answer using two significant figures rad/s2 Submit My Answers Give Up Part B Determine the radial component of the linear acceleration of a point on the edge of the wheel 2.0 s after it has started accelerating Express your answer to two significant figures and include the appropriate units. an-1 Value Units Submit My Answers Give Up Part C Determine the tangential component of the linear acceleration of a point on the edge of the wheel 2.0 s after it has started accelerating Express your answer using two significant figures atan=1 Value Units Submit My Answers Give Up

Explanation / Answer

Given,

d = 70 cm, r = d/2 = 35cm = 0.35m

w1 = 130 x 2 x 3.14/60 = 13.6 rad/s

w2 = 390 x 2 x 3.14/60 = 40.84 rad/s

a) Angular acceleration, A = (w2 - w1)/t = 8.51 rad/s^2

b) w = w1 + A t = 30.63 rad/s

a_rad = v^2/r = 2680.56 m/s^2

a_tan = r*A = 2.98 m/s^2

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